/*
 * Copyright 2017 HugeGraph Authors
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with this
 * work for additional information regarding copyright ownership. The ASF
 * licenses this file to You under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */

package org.apache.hugegraph.kvstore;

import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.hugegraph.backend.store.Shard;
import org.apache.tinkerpop.gremlin.structure.Vertex;

public interface KvStore {

    void set(String key, String value);

    String get(String key);

    List<String> mget(String... keys);

    void remove(String key);

    Boolean contains(String key);

    Number count();

    void clearAll();

    List<Shard> shards(long splitSize);

    Iterator<Vertex> queryVariablesByShard(String start, String end, String page,
                                           long pageLimit);

    Map<String, Object> batchSet(Map<String, Object> params);

}
